SELECT 
  SQL_CALC_FOUND_ROWS products.product_id, 
  IF(
    shared_descr.product_id IS NOT NULL, 
    shared_descr.product, descr1.product
  ) as product, 
  companies.company as company_name, 
  products.product_type, 
  products.parent_product_id 
FROM 
  cscart_products as products 
  LEFT JOIN cscart_product_descriptions as descr1 ON descr1.product_id = products.product_id 
  AND descr1.lang_code = 'en' 
  LEFT JOIN cscart_product_prices as prices ON prices.product_id = products.product_id 
  AND prices.lower_limit = 1 
  LEFT JOIN cscart_companies AS companies ON companies.company_id = products.company_id 
  INNER JOIN cscart_products_categories as products_categories ON products_categories.product_id = products.product_id 
  INNER JOIN cscart_categories ON cscart_categories.category_id = products_categories.category_id 
  AND (
    cscart_categories.usergroup_ids = '' 
    OR FIND_IN_SET(
      0, cscart_categories.usergroup_ids
    ) 
    OR FIND_IN_SET(
      1, cscart_categories.usergroup_ids
    )
  ) 
  AND cscart_categories.status IN ('A', 'H') 
  AND cscart_categories.storefront_id IN (0, 1) 
  LEFT JOIN cscart_ult_product_descriptions shared_descr ON shared_descr.product_id = products.product_id 
  AND shared_descr.company_id = 1 
  AND shared_descr.lang_code = 'en' 
  LEFT JOIN cscart_product_restricted_countries AS prc ON prc.product_id = products.product_id 
  AND prc.country_code = 'US' 
WHERE 
  1 
  AND cscart_categories.category_id IN (22, 32, 33, 34, 39) 
  AND companies.status IN ('A') 
  AND (
    products.usergroup_ids = '' 
    OR FIND_IN_SET(0, products.usergroup_ids) 
    OR FIND_IN_SET(1, products.usergroup_ids)
  ) 
  AND products.status IN ('A') 
  AND prices.usergroup_id IN (0, 0, 1) 
  AND (
    products.available_worldwide = 'Y' 
    OR prc.country_code IS NULL
  ) 
  AND !(
    products.out_of_stock_actions = 'B' && products.avail_since > 1747390348
  ) 
  AND products.parent_product_id = 0 
GROUP BY 
  products.product_id 
ORDER BY 
  products.timestamp desc, 
  products.product_id desc, 
  products.product_id ASC 
LIMIT 
  8880, 40

Query time 0.29790

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE companies ALL PRIMARY 1 Using where; Using temporary; Using filesort
1 SIMPLE cscart_categories range PRIMARY,c_status,p_category_id PRIMARY 3 5 Using where; Using join buffer (flat, BNL join)
1 SIMPLE products_categories ref PRIMARY,pt PRIMARY 3 toolboxdigitalshop_dev.cscart_categories.category_id 908 Using index
1 SIMPLE products eq_ref PRIMARY,status,idx_parent_product_id PRIMARY 3 toolboxdigitalshop_dev.products_categories.product_id 1 Using where
1 SIMPLE shared_descr eq_ref PRIMARY,product_id,company_id PRIMARY 13 toolboxdigitalshop_dev.products_categories.product_id,const,const 1 Using where
1 SIMPLE prc eq_ref PRIMARY PRIMARY 9 toolboxdigitalshop_dev.products_categories.product_id,const 1 Using where; Using index
1 SIMPLE descr1 eq_ref PRIMARY,product_id PRIMARY 9 toolboxdigitalshop_dev.products_categories.product_id,const 1 Using where
1 SIMPLE prices ref usergroup,product_id,lower_limit,usergroup_id usergroup 3 toolboxdigitalshop_dev.products_categories.product_id 1 Using where; Using index

Result

product_id product company_name product_type parent_product_id
88461 Are You Ready (Original Mix) Toolbox Digital Shop P 0
88412 Raise Your Hands (Original Mix) Toolbox Digital Shop P 0
88396 Across the Ocean (Original Mix) Toolbox Digital Shop P 0
89357 Be Mine (Original Mix) Toolbox Digital Shop P 0
89198 Serial Killer (Original Mix) Toolbox Digital Shop P 0
88514 Galaxy (2020 Update) Toolbox Digital Shop P 0
88484 Trauma (Original Mix) Toolbox Digital Shop P 0
88483 Feel The Power (Original Mix) Toolbox Digital Shop P 0
88482 Party Animal (Original Mix) Toolbox Digital Shop P 0
88463 Crowd Go Donk 2020 (Extended Mix) Toolbox Digital Shop P 0
88462 Crowd Go Donk 2020 (Radio Edit) Toolbox Digital Shop P 0
89197 Call Me God (Original Mix) Toolbox Digital Shop P 0
89196 FUCK THAT (Original Mix) Toolbox Digital Shop P 0
89013 The Reaper (Original Mix) Toolbox Digital Shop P 0
89012 Open Doors (Original Mix) Toolbox Digital Shop P 0
89011 Lost Souls (Original Mix) Toolbox Digital Shop P 0
88992 Welcome To The Rave (Radio Mix) Toolbox Digital Shop P 0
88991 Welcome To The Rave (Beefed Up Mix) Toolbox Digital Shop P 0
88990 Happy Times (Original Mix) Toolbox Digital Shop P 0
88989 Future Of Stars (Original Mix) Toolbox Digital Shop P 0
88988 Forever Sunshine (Original Mix) Toolbox Digital Shop P 0
88987 Round & Round (Original Mix) Toolbox Digital Shop P 0
88986 Gold (Original Mix) Toolbox Digital Shop P 0
88985 Now Or Never (Original Mix) Toolbox Digital Shop P 0
88984 The Ultimate Buzz (Full Vocal Mix) Toolbox Digital Shop P 0
88983 The Ultimate Buzz (Hardcore Mix) Toolbox Digital Shop P 0
88982 Should Have Known Better (Original Mix) Toolbox Digital Shop P 0
88952 Devil Work (Original Mix) Toolbox Digital Shop P 0
88951 No Boundaries (Original Mix) Toolbox Digital Shop P 0
88950 Angel of Death (Original Mix) Toolbox Digital Shop P 0
88949 I Told Him It Was Haggis (Original Mix) Toolbox Digital Shop P 0
88948 Reattaching The Head Is The Hard Part (Original Mix) Toolbox Digital Shop P 0
88947 Entry Level Scat Porn (Original Mix) Toolbox Digital Shop P 0
88946 Intracranial Intercourse (Original Mix) Toolbox Digital Shop P 0
88841 Boomstick (Original Mix) Toolbox Digital Shop P 0
88840 This One's For All of Us (Original Mix) Toolbox Digital Shop P 0
88831 Run To Me (Original Mix) Toolbox Digital Shop P 0
88830 Control Your Body (Original Mix) Toolbox Digital Shop P 0
88829 #Evilution (Original Mix) Toolbox Digital Shop P 0
88828 Fall Into Your Arms (Original Mix) Toolbox Digital Shop P 0