In the mini-conference <!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}-->Reader Advisor BoaF the question came up on how to find all the patrons who have borrowed a particular book. I believe the context was the library was interested in doing a book club discussion for a particular title and wanted to know who had read the book recently.
There isn't a way to search by KlasID but Dylan had it right with the Patron Items Report. Limit the report by your targeted patron type, patron status - Active, Circ Status - ALL, MedCode - Digital book and/or Braille, include a begin and end circ date and then Sort By: KLAS ID
Depending on how long your time frame is you might want to email yourself the report rather than wait for the wheels to spin. The report results will have the DB-CARTs at the top but scroll down and you'll find individual titles. Open the html file in Excel and save it as a Excel file or copy/paste the results into Excel to sort and filter and search easily.