[{"collection":"orders","count":2,"content":{"_id":{"type":"enum","values":["abc","xyz"]},"lastModifiedDate":{"type":"date","startDate":"2022-01-19T00:00:00+00:00","endDate":"2023-01-19T00:00:00+00:00"}},"indexes":[{"name":"ttlIdx","key":{"lastModifiedDate":1},"expireAfterSeconds":3600}]}]

db.orders.aggregate([{$indexStats:{}},{$match:{"spec.expireAfterSeconds":{$exists:false},"accesses.ops":0,"name":{$ne:"_id_"}}}])