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 (
    102019, 102018, 102017, 102016, 102015, 
    102014, 102013, 102012, 102011, 102010, 
    102009, 102008, 102007, 102006, 102005, 
    102004, 102003, 102002, 102031, 102030
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00061

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 20 Using where

Result

product_id short_description full_description meta_keywords meta_description search_words promo_text
102002 MMT022,Meccano Music,Meccano Twins
102003 MMT022,Meccano Music,Meccano Twins
102004 MMT022,Meccano Music,Meccano Twins
102005 MMT022,Meccano Music,Meccano Twins
102006 MMT022,Meccano Music,Meccano Twins
102007 MMT022,Meccano Music,Meccano Twins
102008 MMT022,Meccano Music,Meccano Twins
102009 MMT022,Meccano Music,Meccano Twins
102010 MMT022,Meccano Music,Meccano Twins
102011 MMT022,Meccano Music,Meccano Twins
102012 MMT022,Meccano Music,Meccano Twins
102013 MMT022,Meccano Music,Meccano Twins
102014 MMT022,Meccano Music,Meccano Twins
102015 MMT022,Meccano Music,Meccano Twins
102016 MMT022,Meccano Music,Meccano Twins
102017 MMT022,Meccano Music,Meccano Twins
102018 MMT022,Meccano Music,Meccano Twins
102019 MMT022,Meccano Music,Meccano Twins
102030 CR227,Contagious Records,Kinn,Bridgey-B
102031 CR227,Contagious Records,Kinn,Bridgey-B