UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MMEwhpDrwXq4+7OnPIu0YecIJ2li3cELzhImeWtHEng=' 
WHERE 
  key_id = '6c668086700d059e6253ea8933093a963bad7195942072e89c73b877af66571d' 
  AND (
    token = 'MMEwhpDrwXq4+7OnPIu0YecIJ2li3cELzhImeWtHEng=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )