UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Z6HkylQipEEcLCoRMaQEL9zMqsJoOlDmKMT4dH1RzPk=' 
WHERE 
  key_id = '1df305bfdb3648965cd45f8f135dc550f190270066295387756f27577cbc670d' 
  AND (
    token = 'Z6HkylQipEEcLCoRMaQEL9zMqsJoOlDmKMT4dH1RzPk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )