Hi Gunjan,
because there is no PII information stored in that table. GDPR workflows only take into consideration tables where we have PII data.
To answer , your initial query you can rather schedule the workflow so that only the current target is picked up by the delivery or have a simple personalization condition based on the recipient table in the delivery content so that if the recipient is not present , the message sending to that recipient will fail.
Regards,
Adhiyan