SELECT 
  lang.name, 
  lang.value 
FROM 
  cscart_language_values lang 
WHERE 
  lang.lang_code = 'en' 
  AND lang.name IN (
    'text_no_products_found', 'category_description_header', 
    'show_more_text', 'show_less_text', 
    'text_no_products_found', 'category_description_header', 
    'show_more_text', 'show_less_text'
  )

Query time 0.00945

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "table": {
          "table_name": "lang",
          "access_type": "range",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "392",
          "used_key_parts": ["lang_code", "name"],
          "rows": 4,
          "filtered": 100,
          "index_condition": "lang.lang_code = 'en' and lang.`name` in ('text_no_products_found','category_description_header','show_more_text','show_less_text','text_no_products_found','category_description_header','show_more_text','show_less_text')"
        }
      }
    ]
  }
}