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 (
    99122, 99121, 99120, 99119, 99106, 99104, 
    99099, 99052, 98970, 98764, 98763, 
    98762, 98761, 98760, 98759, 98758, 
    98757, 98756, 98755, 98754
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00038

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
98754 BOX004,Hot Box Digital,Team Sly
98755 BOX004,Hot Box Digital,Kirk P
98756 BOX004,Hot Box Digital,Matt Wade,Pez,Marc Coyne
98757 BOX004,Hot Box Digital,Team Sly,Bizarre Q
98758 BOX004,Hot Box Digital,Pez,Vandalize
98759 BOX004,Hot Box Digital,The Hoover Jocks
98760 BOX004,Hot Box Digital,Kev & Si
98761 BOX004,Hot Box Digital,Team Sly
98762 BOX004,Hot Box Digital,Pat Glenny
98763 BOX004,Hot Box Digital,Adam Kempton
98764 Various Artists, Vocal Bangers, Hot Box Digital, Hard House, Featured Compilations, Exclusive, Toolbox Digital Download Vocal Bangers by Hot Box Digital from Toolbox Digital, the UK’s number one outlet for exclusive hard dance, hard trance, hardcore, hardstyle and more. BOX004,Hot Box Digital
98970 Hoover freaks UnitDvsn,dale dean,
99052
99099
99104 Mobi D, Frantic Digital, Hard House, Within Us Mobi D, Frantic Digital, Hard House, Within Us
99106 EM007, Boski, The Breakdown, Emmanating Records, Hard House, Dance Music, Club Music, DJ Music EM007, Boski, The Breakdown, Emmanating Records, Hard House, Dance Music, Club Music, DJ Music EM007, Boski, The Breakdown, Emmanating Records, Hard House, Dance Music, Club Music, DJ Music
99119 DjOne7TOut,
99120 Tekneak, Burning Blade Tekneak, Burning Blade
99121
99122 NUROGL, Pyro, Ambiguous, Fevah Records, Original Mix, Exclusive, Toolbox Digital Download Ambiguous (Original Mix) by Fevah Records from Toolbox Digital, the UK’s number one outlet for exclusive hard dance, hard trance, hardcore, hardstyle and more.