SELECT 
  category_id, 
  category, 
  description, 
  lang_code 
FROM 
  cscart_category_descriptions 
WHERE 
  category_id = 198

Query time 0.00021

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE cscart_category_descriptions ref PRIMARY PRIMARY 3 const 8

Result

category_id category description lang_code
198 Digital Cameras de
198 Digital Cameras en
198 Digital Cameras es
198 Digital Cameras fr
198 Digital Cameras ru
198 Digital Cameras uk