Row_key from sstable2json to actual value of the key

[ng]

sstable2json tomcat-t5-ic-1-Data.db -e
gives me

00000021
0000001f
00000020


How do I convert this (hex) to actual value of column so I can do below

select * from tomcat.t5 where c1='concerted value';

Thanks in advance for the help.