Very large values for Rows_read in slow log

In slow log:

# User@Host: blah_blah[blah_blah] @ my-host.net [192.168.100.1]
# Thread_id: 2 Schema: blah
# Query_time: 0.000015 Lock_time: 0.000000 Rows_sent: 0 Rows_examined: 0 Rows_affected: 0 Rows_read: 4124524590823728995
# administrator command: Init DB;
# User@Host: blah_blah[blah_blah] @ my-host.net [192.168.100.1]
# Thread_id: 2 Schema: blah
# Query_time: 0.000018 Lock_time: 0.000000 Rows_sent: 0 Rows_examined: 0 Rows_affected: 0 Rows_read: 4124524590823728995
SELECT template FROM template WHERE title='options';