SELECT 
  lang.name, 
  IF(
    cscart_ult_language_values.value IS NULL, 
    lang.value, cscart_ult_language_values.value
  ) as value 
FROM 
  cscart_language_values lang 
  LEFT JOIN cscart_ult_language_values ON cscart_ult_language_values.name = lang.name 
  AND company_id = 1 
  AND cscart_ult_language_values.lang_code = lang.lang_code 
WHERE 
  lang.lang_code = 'en' 
  AND lang.name IN (
    'error_validator_recaptcha', 'recaptcha.recaptcha_cookie_title', 
    'recaptcha.recaptcha_cookie_description', 
    'error_validator_recaptcha', 'recaptcha.recaptcha_cookie_title', 
    'recaptcha.recaptcha_cookie_description'
  )

Query time 0.00018

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE cscart_ult_language_values system PRIMARY 0 const row not found
1 SIMPLE lang range PRIMARY PRIMARY 392 3 Using index condition

Result

name value
error_validator_recaptcha Please confirm you are not a robot.
recaptcha.recaptcha_cookie_description Google reCAPTCHA is a service that provides anti-bot protection and verifies that site visitors are humans. Here is <a href="https://policies.google.com/privacy" target="_blank">Google privacy policy</a>; we also recommend Google's concise and comprehensive <a href="https://support.google.com/maps/answer/10400210" target="_blank">note on privacy</a>.
recaptcha.recaptcha_cookie_title Google reCAPTCHA