doing_wp_cron in url

Hello,

After changing the wp-config by adding:
/* That’s all, stop editing! Happy blogging. */
define(‘ALTERNATE_WP_CRON’ , true );

I face another issue. doing_wp_cron is added to all my URLs and I guess that it could damage my SEO performances.

On my shared server, I can add a scheduling. Wouldn’t it be easier to add the scheduling link to Backwpup and avoid the alternate cron? To do this I have to specify the path to the command to be executed and the version of the PHP language. Could you tell me what I can add there?

Thanks in advance