UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'hgX2Lyuv1vZC+dZ1rIxOGvtcyDJHVceEj49o5PI0nu8=' 
WHERE 
  key_id = 'c51a92d1097e72145aca26e597b6989453d19f969815a1981c26a7c7cbd02eb9' 
  AND (
    token = 'hgX2Lyuv1vZC+dZ1rIxOGvtcyDJHVceEj49o5PI0nu8=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )