Hi @Navdeep_Singh,
Welcome to MongoDB Developer Community Forums!
As noted in the documentation, the Atlas Data Explorer does not support date queries that use the IsoDate() function. Instead, use the MongoDB Extended JSON (v2)$date data type for date queries.
You may wish to try using the following filter in Data Explorer to see if it returns any results: {date_created: {$date:"2021-02-01T16:00:01.000+00:00"}}