Help with query for entries that take over 4 mins for the current day.

Gurus,

I need help writing a query that reports all entries that take over 4 mins for the current day.

Current Query:

select tsjkeyi import_id, TSJSTAD start_time, TSJENDD end_time from TSJ
where TSJTYPS = 22
order by TSJSTAD desc;

Result:
import_id   start_time                                               end_time
379324         02-SEP-14 08.25.09.663000000 AM         02-SEP-14 08.31.11.118000000 AM
379316         02-SEP-14 08.23.48.561000000 AM         02-SEP-14 08.23.50.418000000 AM

I just want the record where the total time was over 4 minutes:

import_id   start_time                                               end_time
379324         02-SEP-14 08.25.09.663000000 AM         02-SEP-14 08.31.11.118000000 AM

Thanks in advance!