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 (
        119373, 119374, 119375, 119376, 119377, 
        119378, 119379, 119380, 119381, 119382, 
        119383, 119384, 119385, 119386, 119387, 
        119388, 119389, 119390, 119391, 119392, 
        119393, 119394, 119395
      )
    ) 
    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 0.00132

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 23 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
119395 I Don't Care (ABSOLUTE. We Still Just Don't Care Extended Remix) Toolbox Digital Shop P 0
119394 To The Limit (Alan Fitzpatrick Extended Remix) Toolbox Digital Shop P 0
119393 Don't Ever Stop (BK Extended Remix) Toolbox Digital Shop P 0
119392 Higher & Higher (Patrick Topping Extended Remix) Toolbox Digital Shop P 0
119391 The Dawn (Mark Sherry Extended Remix) Toolbox Digital Shop P 0
119390 Bring The Beat Back (Hannah Laing Extended Remix) Toolbox Digital Shop P 0
119389 Burning Up (Nicole Moudaber Extended Remix) Toolbox Digital Shop P 0
119388 Get Loose (Airwolf Paradise Extended Remix) Toolbox Digital Shop P 0
119387 Give Me A Reason (Morgan Seatree Extended Remix) Toolbox Digital Shop P 0
119386 Feel My Love (Don't Go Away) (Eats Everything's Big Organ Extended Remix) Toolbox Digital Shop P 0
119385 I Don't Care (Trade Extended Mix) Toolbox Digital Shop P 0
119384 To The Limit (Vocal Extended Mix) Toolbox Digital Shop P 0
119383 Splashdown (Extended) Toolbox Digital Shop P 0
119382 Resistance is Futile (Extended) Toolbox Digital Shop P 0
119381 Are You All Ready (Extended) Toolbox Digital Shop P 0
119380 UFO (Trade Extended Mix) Toolbox Digital Shop P 0
119379 The Dawn (Extended) Toolbox Digital Shop P 0
119378 Bring The Beat Back (Trade Extended Mix) Toolbox Digital Shop P 0
119377 Get Loose (Trade Extended Mix) Toolbox Digital Shop P 0
119376 Higher & Higher (Trade Extended Mix) Toolbox Digital Shop P 0
119375 Give Me A Reason (Trade Extended Mix) Toolbox Digital Shop P 0
119374 Don't Ever Stop (Club Extended Mix) Toolbox Digital Shop P 0
119373 Burning Up (Trade Extended Mix) Toolbox Digital Shop P 0