Did you configure a filter in the Get Records activity? Otherwise the activity will get all activities.
At least this is the way with all other Get Something activities in other Integration Packs.
Unfortunately I don't know the Kelverion Service Now Integration Pack. But it should work the same way than other IPs/Activities.
(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Regards
Andreas Baumgarten