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 (
        59809, 59810, 59811, 59812, 59813, 59814, 
        59815, 59816, 59817, 59818, 59819, 
        59820, 59821, 59822, 59823, 59824, 
        59825, 59826, 59827, 59828, 59829, 
        59830, 59831, 59832, 59833, 59834, 
        59835, 59836
      )
    ) 
    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 0.00136

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 28 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
59836 Street Sense (Wizard Remix) Toolbox Digital Shop P 0
59835 Body Movin (Original Mix) Toolbox Digital Shop P 0
59834 Get On Up (Original Mix) Toolbox Digital Shop P 0
59833 Adhesive (Original Mix) Toolbox Digital Shop P 0
59832 Restless (Original Mix) Toolbox Digital Shop P 0
59831 Take You There (Wizard Remix) Toolbox Digital Shop P 0
59830 Cue & Groove (Original Mix) Toolbox Digital Shop P 0
59829 People On The Floor (Original Mix) Toolbox Digital Shop P 0
59828 Above Average (Original Mix) Toolbox Digital Shop P 0
59827 Finally (Original Mix) Toolbox Digital Shop P 0
59826 Digital Delay (Original Mix) Toolbox Digital Shop P 0
59825 Understand Me (Original Mix) Toolbox Digital Shop P 0
59824 I Want Ya (Original Mix) Toolbox Digital Shop P 0
59823 Drop The Beat (Original Mix) Toolbox Digital Shop P 0
59822 Reflect (Original Mix) Toolbox Digital Shop P 0
59821 Day By Day (Original Mix) Toolbox Digital Shop P 0
59820 Rock Your Body (Original Mix) Toolbox Digital Shop P 0
59819 Do You Believe (Original Mix) Toolbox Digital Shop P 0
59818 Live Like This (Original Mix) Toolbox Digital Shop P 0
59817 Rocking Your Body (Original Mix) Toolbox Digital Shop P 0
59816 Big Time (Original Mix) Toolbox Digital Shop P 0
59815 Get Down (Original Mix) Toolbox Digital Shop P 0
59814 Open Minds (Original Mix) Toolbox Digital Shop P 0
59813 Turn It Up (Original Mix) Toolbox Digital Shop P 0
59812 Rockin To The Music (Original Mix) Toolbox Digital Shop P 0
59811 Databass (Original Mix) Toolbox Digital Shop P 0
59810 Freak It (Dave Owens Remix) Toolbox Digital Shop P 0
59809 Inspiration (Original Mix( Toolbox Digital Shop P 0