UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'lFymfYQESbCrw7YMwVcVXCVqH78Ilq+xhR7ZvNahuFU=' 
WHERE 
  key_id = '50481df9342df195af0376d630eeba5ac1f53d0145bcd266474e9b8cf9d8a85d' 
  AND (
    token = 'lFymfYQESbCrw7YMwVcVXCVqH78Ilq+xhR7ZvNahuFU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )