The issue has been resolved. The main issue with this problem was that some BASIS jobs was scheduled under the user "X" which in turn triggered the job SAP_WSSE_TOKEN_CACHE_CLEANUP. That is the reason the job SAP_WSSE_TOKEN_CACHE_CLEANUP wouldn't show up even when I gave the "to date" to 31.12.9999 with the status "Resolved".
Therefore, I re-scheduled all the BASIS jobs from a super user and deleted the ones previously scheduled under user "X" and the issue doesn't occur again.
Thanks to all the experts for their inputs.
Regards
Manas
