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 (
    97981, 97980, 97979, 97978, 97665, 92933, 
    98075, 89237, 98522, 98518, 97905, 
    98481, 98480, 98479, 98478, 98477, 
    98476, 98475, 98474, 98473
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00054

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
89237
92933
97665 The Snail, Without You, Emma-Nate & Casey F, Digital Snail The Snail, Without You, Emma-Nate & Casey F, Digital Snail
97905 INR077,Immortal Noise Recordings,Spyndl
97978 Cheek541,Cheeky Tracks,Danny Gibson
97979 Cheek541,Cheeky Tracks,Danny Gibson
97980 Cheek541,Cheeky Tracks,Danny Gibson
97981 Cheek541,Cheeky Tracks,Danny Gibson
98075 TT016D,Tuff Trax,Nippy Baines,Nikkdbubble
98473 ross,homson,terrbang,hard,house,toolboxdigital,Politically,Incorrect ross,homson,terrbang,hard,house,toolboxdigital,Politically,Incorrect
98474 ross,homson,terrbang,hard,house,toolboxdigital,cock,hoop ross,homson,terrbang,hard,house,toolboxdigital,cock,hoop
98475 ross,homson,terrbang,hard,house,toolboxdigital,Surf,Turf ross,homson,terrbang,hard,house,toolboxdigital,Surf,Turf
98476 ross,homson,terrbang,hard,house,toolboxdigital,Attack,Of,The,Nookie,Monster ross,homson,terrbang,hard,house,toolboxdigital,Attack,Of,The,Nookie,Monster
98477
98478
98479 pat,glenny,make,it,move,pitch,drift pat,glenny,make,it,move,pitch,drift pat,glenny,make,it,move,pitch,drift
98480 Full circle productions, Zillin, Zillin, full circle productions, fcp
98481 pat,glenny,without,you,pitch,drift pat,glenny,without,you,pitch,drift pat,glenny,without,you,pitch,drift
98518
98522 Undefeated DJ Serenity Energy Source Productions Hard House Undefeated DJ Serenity Energy Source Productions Hard House Undefeated DJ Serenity Energy Source Productions Hard House