UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'YMb3cMqTF5wS7oZbrn2i6OueZKvk/9RJy7/YVbery6M=' 
WHERE 
  key_id = '6cbb168c8aa4bd36365909b58368988556715635121ba27773a1330131e81230' 
  AND (
    token = 'YMb3cMqTF5wS7oZbrn2i6OueZKvk/9RJy7/YVbery6M=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )