UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = 'RU97WgsQ89bHwTCRwnkr5K8KvGBbMtMtO/H5BFBpeu0=' 
WHERE 
  key_id = '8a9bf1231996bf2ada87044d8bfc27f161ed44ccbff6b2532fd89b895355d650' 
  AND (
    token = 'RU97WgsQ89bHwTCRwnkr5K8KvGBbMtMtO/H5BFBpeu0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )