hi Daniel,
you may wish to look at using the Expensive Statements trace in hana studio > double click on your system > Trace Configuration tab. you can set the threshold to a low amount and set the trace to the main table affected by the stored proc.
after you activate this, go to the Performance tab > Expensive Statements Trace. you can further filter this or export the results to a file. there is also then a view that you can utilize M_EXPENSIVE_STATEMENTS in the sql console.
the pic below is the call from the stored proc that i just put a trace on as a test.
for more info on this trace, there's a video in the sap hana academy here under Performance and Monitoring.
i hope this helps,
jamie