UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'O/tlYSvWQFII6pMO352LUngm387dlamhBpviAzVAjK8=' 
WHERE 
  key_id = '6cf295d07de480f7afd9a089a94528bef90702a9554870040fe4c1af95915313' 
  AND (
    token = 'O/tlYSvWQFII6pMO352LUngm387dlamhBpviAzVAjK8=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )