UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'PYej9yTBI/LKLuMg0RVcmezhOggpkN2WPHf+WxaVxOo=' 
WHERE 
  key_id = '51be68d4cd938cd23cddcd9f8c6b9cd0b113a82ee5f1f787cfa47c3d0a115ae2' 
  AND (
    token = 'PYej9yTBI/LKLuMg0RVcmezhOggpkN2WPHf+WxaVxOo=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )