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SELECT 
  cscart_ult_product_descriptions.product_id, 
  cscart_ult_product_descriptions.short_description, 
  IF(
    cscart_ult_product_descriptions.short_description = "", 
    cscart_ult_product_descriptions.full_description, 
    ""
  ) AS full_description, 
  cscart_ult_product_descriptions.meta_keywords, 
  cscart_ult_product_descriptions.meta_description, 
  cscart_ult_product_descriptions.search_words, 
  cscart_ult_product_descriptions.promo_text 
FROM 
  cscart_ult_product_descriptions 
WHERE 
  cscart_ult_product_descriptions.product_id IN (
    52874, 52873, 52872, 52871, 52870, 52869, 
    52868, 52867, 52866, 52865, 52864, 
    52863, 52862, 52861, 52860, 52859, 
    52858, 52857, 52856, 52979, 52908, 
    52890, 52889, 52888, 52828, 52820, 
    52819, 53140, 53139, 52807, 52806, 
    52805, 52804, 53031, 53030, 52786, 
    52785, 52784, 53088, 52774, 52891, 
    52880, 52757, 52749, 52748, 52747, 
    52746, 52778, 52758, 52685, 52709, 
    52687, 52686, 52682, 52677, 52671, 
    52670, 52669, 52942, 52941, 52940, 
    52939, 52636, 52635, 52645, 52644, 
    52643, 52642, 52589, 52588, 52587, 
    52586, 52585, 59345, 52633, 52632, 
    52578, 52542, 52524, 52707
  ) 
  AND cscart_ult_product_descriptions.company_id = 1 
  AND cscart_ult_product_descriptions.lang_code = 'en'

Query time 0.00033

Explain
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	cscart_ult_product_descriptions	ALL	PRIMARY,product_id,company_id				1	Using where