UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'vH2vxgEsii1hdgcybxXCVwKTqpgbLWx6YfEe8ztFWfc=' 
WHERE 
  key_id = '576409ed40464e1ff95e85c49e7c7645fcb626033ccad912487823bdb383988f' 
  AND (
    token = 'vH2vxgEsii1hdgcybxXCVwKTqpgbLWx6YfEe8ztFWfc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )