Database
[{"_id":"1","name":"user1","data":"some data","insertionTime":"2020-11-10T10:18:27.158Z",},{"_id":"2","name":"user1","data":"some data","insertionTime":"2020-11-10T14:18:27.158Z",},{"_id":"3","name":"user1","data":"some data","insertionTime":"2020-11-06T14:18:27.158Z",}]
Query
db.collection.find({$expr:{$and:[{$eq:["$name","user1"]},{$gte:[{$dateFromString:{dateString:"$insertionTime"}},{"$subtract":["$$NOW",259200000]}]}]}})