SELECT 
  lang.name, 
  lang.value 
FROM 
  cscart_language_values lang 
WHERE 
  lang.lang_code = 'en' 
  AND lang.name IN (
    'go_to_admin_panel', 'sign_out', 
    'sign_in', 'register', 'sign_in', 
    'sign_in', 'sign_in', 'register', 
    'abt__ut2_sign_in_please', 'account', 
    'orders', 'wishlist', 'comparison_list', 
    'downloads', 'track_my_order', 'track_my_order', 
    'order_id', 'email', 'go', 'go_to_admin_panel', 
    'sign_out', 'sign_in', 'register', 
    'sign_in', 'sign_in', 'sign_in', 
    'register', 'abt__ut2_sign_in_please', 
    'account', 'orders', 'wishlist', 
    'comparison_list', 'downloads', 
    'track_my_order', 'track_my_order', 
    'order_id', 'email', 'go'
  )

Query time 0.00033

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "lang",
      "access_type": "range",
      "possible_keys": ["PRIMARY"],
      "key": "PRIMARY",
      "key_length": "392",
      "used_key_parts": ["lang_code", "name"],
      "rows": 14,
      "filtered": 100,
      "index_condition": "lang.lang_code = 'en' and lang.`name` in ('go_to_admin_panel','sign_out','sign_in','register','sign_in','sign_in','sign_in','register','abt__ut2_sign_in_please','account','orders','wishlist','comparison_list','downloads','track_my_order','track_my_order','order_id','email','go','go_to_admin_panel','sign_out','sign_in','register','sign_in','sign_in','sign_in','register','abt__ut2_sign_in_please','account','orders','wishlist','comparison_list','downloads','track_my_order','track_my_order','order_id','email','go')"
    }
  }
}