Dynamo scan not finding records of time in unix.

Below are the params:

let params = {
    TableName: SESSIONTABLE,
    ProjectionExpression: 
        "practitioner_full_name, appointment, utc_offset, start_time, start_time_unix, attendees, practitioner_email, id, practitioner_id, no_video_link, title, practitioner_title, service_text",
    FilterExpression:
        "(start_time_unix between :currentTime and :unixTimeAfteramin)",
    ExpressionAttributeValues: {
        ":currentTime": 1660297747000,
        ":unixTimeAfteramin" : 1660297807000,
    },
    };

This is the value of start_time_unix column - 1660297800000

The value of start_time_unix lies well within currentTime and unixTimeAfteramin column values.

Not sure what's wrong with dynamodb here. I tried the three values in python shell as well, it works good there.

Python 3.8.10 (default, Jun 22 2022, 20:18:18) 
[GCC 9.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 1660297747000 < 1660297800000 < 1660297807000
True
>>>