UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Mepz5F5GcTzu5V3YuisI95BubLwWaAta5l75VSTVapo=' 
WHERE 
  key_id = '4bb4451b94bb58183a1b343ed6075e4c8f63697040fc04b95adb19189d4cc761' 
  AND (
    token = 'Mepz5F5GcTzu5V3YuisI95BubLwWaAta5l75VSTVapo=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )