UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'm8z+GPnOTS3HtCTcWQhDcHqOR2wovTnnuuIjHIkicVk=' 
WHERE 
  key_id = '83935db72c104437b2789529fb7af8d518af1c03aa2e9aae0be8be417812f3b2' 
  AND (
    token = 'm8z+GPnOTS3HtCTcWQhDcHqOR2wovTnnuuIjHIkicVk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )