SELECT 
  cscart_product_descriptions.product_id, 
  cscart_product_descriptions.short_description, 
  IF(
    cscart_product_descriptions.short_description = '' 
    OR cscart_product_descriptions.short_description IS NULL, 
    cscart_product_descriptions.full_description, 
    ''
  ) AS full_description, 
  cscart_product_descriptions.meta_keywords, 
  cscart_product_descriptions.meta_description, 
  cscart_product_descriptions.search_words, 
  cscart_product_descriptions.promo_text 
FROM 
  cscart_product_descriptions 
WHERE 
  cscart_product_descriptions.product_id IN (
    113484, 113483, 113482, 113481, 113480, 
    113479, 113478, 113477, 113476
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00035

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE cscart_product_descriptions range PRIMARY,product_id PRIMARY 9 9 Using where

Result

product_id short_description full_description meta_keywords meta_description search_words promo_text
113476 INFEXHSLP001,Infexious Hardstyle,Killaheadz,MC B-Kicker
113477 INFEXHSLP001,Infexious Hardstyle,Killaheadz
113478 INFEXHSLP001,Infexious Hardstyle,Killaheadz
113479 INFEXHSLP001,Infexious Hardstyle,Killaheadz
113480 INFEXHSLP001,Infexious Hardstyle,Killaheadz
113481 INFEXHSLP001,Infexious Hardstyle,Killaheadz
113482 INFEXHSLP001,Infexious Hardstyle,Killaheadz,MC B-Kicker
113483 INFEXHSLP001,Infexious Hardstyle,Killaheadz
113484 INFEXHSLP001,Infexious Hardstyle,Killaheadz