UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MGzuCPku8kPh59FBlitRldQJBjK44eIaQVtcFgKUtqM=' 
WHERE 
  key_id = '823b2d423800f000c27741d9491dccf9b64416e3306b13549d3cf547ebe07b94' 
  AND (
    token = 'MGzuCPku8kPh59FBlitRldQJBjK44eIaQVtcFgKUtqM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )