SELECT 
  cscart_product_descriptions.product_id, 
  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 (
    103655, 103654, 103653, 103652, 103651, 
    103650, 103649, 103648, 103647, 103646, 
    103645, 103644, 103643, 103642, 103641, 
    103640, 103639, 103638
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00030

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 18 Using where

Result

product_id meta_keywords meta_description search_words promo_text
103638 KIT005DD,Tidy,Colin Barratt,Phil York
103639 KIT005DD,Tidy,Organ Donors,Vinylgroover
103640 KIT005DD,Tidy,Ali Wilson,Matt Smallwood
103641 KIT005DD,Tidy,The Tidy Boys,BK
103642 KIT005DD,Tidy,Euphonic Sessions,Kronos
103643 KIT005DD,Tidy,Lox,Dark By Design
103644 KIT005DD,Tidy,Flashheadz
103645 KIT005DD,Tidy,Captain Tinrib,Sol Ray
103646 KIT005DD,Tidy,Jon BW
103647 KIT005DD,Tidy,Shaun M,Abandon
103648 KIT005DD,Tidy,Paul Maddox
103649 KIT005DD,Tidy,Lee Pasch,Base Graffiti
103650 KIT005DD,Tidy,Gaz West
103651 KIT005DD,Tidy,Wid & Ben
103652 KIT005DD,Tidy,Chris C,Madam Zu,Ben Kaye
103653 KIT005DD,Tidy,Guyver
103654 KIT005DD,Tidy,Ingo,Caroline Banx,Colin Barratt
103655 KIT005DD,Tidy,Flashheadz