Question : Does geoquery download all the the keys?

[abbana]

Scenario:

1.000.000 keys spread around the world. Circlequery with 10 Km ray.

will all the 1.000.000 keys being downloaded, then only those within the ray provided?

I am asking this because , doing a "firebase database:profile" I see that also keys outside the ray are being downloaded in the snapshot.