No. You must own the exclusive rights to the music you submit for monetization, meaning if you've sold those exclusive rights, you cannot then submit the beat for monetization.
If you're already monetizing the beat, and then sell it exclusively, you can remove this from distribution in your Dashboard, here, or contact us at firstname.lastname@example.org and we will remove this from monetization.
Content ID is available to Platinum members only. If you have a free account, you can upgrade here.