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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 (627, 630, 632, 629, 635, 631, 636) 
  AND cscart_ult_product_descriptions.company_id = 2 
  AND cscart_ult_product_descriptions.lang_code = 'en'

Query time 0.00036

Explain
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	cscart_ult_product_descriptions	range	PRIMARY,product_id,company_id	PRIMARY	13		7	Using index condition

Result

product_id	short_description	full_description	meta_keywords	meta_description	search_words	promo_text
627		<p>Makes walking and working on the roof safe.</p> <p>Bench grips and supports are required for the proper installation of bench.</p>
629		<p>Ensures safety while walking on the roof. Installed on pitched roofs (with the pitch of over 25 degrees) with the use of one of the special supports.</p>
630		<p>Used for installation of benches.</p> <p>Supports are additionally required for the proper installation of benches.</p> <p>Sold together with installation screws.</p>
631		<p>Used for installation of benches and steps on pitched roofs with covered flat roofing.</p> <p>Bench grips are additionally required for the proper installation of benches.</p>
632		<p>Used for installation of benches and steps on pitched roofs covered with clay or concrete tiles, with the exception of plain tile.</p> <p>Bench grips are additionally required for the proper installation of benches.</p>
635		<p>Used for installation of benches directly to the wall or the chimney.</p> <p>Bench grips are additionally required for the proper installation benches.</p>
636		<p>Used for joining two benches into longer stretches.</p> <p>Benches should be joined together with the use of two connectors in each joining point</p> <p>Ssold together with installation screws.</p>