UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'PmwQh4CJ8ZxCzFUcC5UzRVLMGMs0jSaphnjMHNO/Shw=' 
WHERE 
  key_id = '2576b1d0e8a91f560b3d5e29acf1dfd83ffed132609ed0bd7b28862d04e5e13f' 
  AND (
    token = 'PmwQh4CJ8ZxCzFUcC5UzRVLMGMs0jSaphnjMHNO/Shw=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00033