UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'b6FJ1WDnasZigsLyTUN7sfJCWQKEeNMwew1FMKp2Od4=' 
WHERE 
  key_id = 'c81ed6cde94f5dfb5977b8fb71c2bc75233b9633766a6eae977ee504a87a59d4' 
  AND (
    token = 'b6FJ1WDnasZigsLyTUN7sfJCWQKEeNMwew1FMKp2Od4=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )