MSSQL cdc query runs forever intermittently

Hi Team,
Below query hangs/stay forever at mssql server side. I am running airbyte connector to read cdc data hourly basis and sometime below sql stuck in running status at server however, airbyte tasks completed. could you shed some light on this

2 (
3 SELECT MAX(start_lsn)
4 FROM cdc.lsn_time_mapping
5 )
6 ,
7 (
8 SELECT MAX(start_lsn)
9 FROM cdc.lsn_time_mapping
10 WHERE tran_id <> 0x00
11 )


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