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 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 (
    (
      1 
      AND products.product_id IN (
        73409, 73410, 73411, 73412, 73413, 73414, 
        73415, 73416, 73417, 73418, 73419, 
        73420, 73421, 73422, 73423, 73424, 
        73425, 73426, 73427, 73428, 73429, 
        73430, 73431, 73432, 73433
      )
    ) 
    AND companies.status IN ('A') 
    AND prices.usergroup_id IN (0, 0, 1)
  ) 
  AND (
    products.available_worldwide = 'Y' 
    OR prc.country_code IS NULL
  ) 
GROUP BY 
  products.product_id 
ORDER BY 
  products.timestamp desc, 
  products.product_id desc, 
  products.product_id ASC

Query time 0.00111

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 products range PRIMARY,status PRIMARY 3 25 Using where; Using join buffer (flat, BNL join)
1 SIMPLE shared_descr eq_ref PRIMARY,product_id,company_id PRIMARY 13 toolboxdigitalshop_dev.products.product_id,const,const 1 Using where
1 SIMPLE prc eq_ref PRIMARY PRIMARY 9 toolboxdigitalshop_dev.products.product_id,const 1 Using where; Using index
1 SIMPLE prices ref usergroup,product_id,lower_limit,usergroup_id usergroup 3 toolboxdigitalshop_dev.products.product_id 1 Using where; Using index
1 SIMPLE descr1 eq_ref PRIMARY,product_id PRIMARY 9 toolboxdigitalshop_dev.products.product_id,const 1 Using where
1 SIMPLE products_categories ref PRIMARY,pt pt 3 toolboxdigitalshop_dev.products.product_id 1 Using index
1 SIMPLE cscart_categories eq_ref PRIMARY,c_status,p_category_id PRIMARY 3 toolboxdigitalshop_dev.products_categories.category_id 1 Using where

Result

product_id product company_name product_type parent_product_id
73433 Korobeiniki (Original Mix) Toolbox Digital Shop P 0
73432 Rush Hour (Original Mix) Toolbox Digital Shop P 0
73431 Hard De Pauw (Eo!) (Original Mix) Toolbox Digital Shop P 0
73430 Strong (JJ's Dark & Hard Remix) Toolbox Digital Shop P 0
73429 Hands Of Time (Groove Control Remix Edit) Toolbox Digital Shop P 0
73428 Heptagon 2018 (Original Mix) Toolbox Digital Shop P 0
73427 Zero Collapse (Hagane Shizuka Remix) Toolbox Digital Shop P 0
73426 My Adrenaline (Original Mix) Toolbox Digital Shop P 0
73425 Reggie Fag Ash (Charlie Goddard Remix) Toolbox Digital Shop P 0
73424 That's Life (Dirty Drop Mix) Toolbox Digital Shop P 0
73423 It's This Again (DJ Edit) Toolbox Digital Shop P 0
73422 We Come To Bounce (Scott Rez & Andy Mac Mix) Toolbox Digital Shop P 0
73421 Passage (Original Mix) Toolbox Digital Shop P 0
73420 Tribute (Original Mix) Toolbox Digital Shop P 0
73419 Pure Evil (Original Mix) Toolbox Digital Shop P 0
73418 True Power (Original Mix) Toolbox Digital Shop P 0
73417 The Dream (Original Mix) Toolbox Digital Shop P 0
73416 In Live (Original Mix) Toolbox Digital Shop P 0
73415 Trimurti (Original Mix) Toolbox Digital Shop P 0
73414 Ave It (Original Mix) Toolbox Digital Shop P 0
73413 Confessions (Original Mix) Toolbox Digital Shop P 0
73412 Music (Original Mix) Toolbox Digital Shop P 0
73411 Revenge (Original Mix) Toolbox Digital Shop P 0
73410 Anima (Original Mix) Toolbox Digital Shop P 0
73409 Fight For You (Original Mix) Toolbox Digital Shop P 0