UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Px6k9DFcmeZXh+gfRMNGzN19FpCDEgbwH1bGGlr2sU0=' 
WHERE 
  key_id = '21a2bc0eb136718e72e3dbc7e49a41eab7b3795040a3afad715c35eb1f30e51f' 
  AND (
    token = 'Px6k9DFcmeZXh+gfRMNGzN19FpCDEgbwH1bGGlr2sU0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )