Table contains 4 indexes inside InnoDB, which is different from the number of indexes 3 defined in MySQL
The error is related to the difference between Innodb definition and the frm file definition.

It probably occurred because of a crash during an ALTER TABLE or similar statement at some point.

To restore the consistency an ALTER TABLE wtb_device_auths FORCE will recreate the table (while exclusively locking it). This recreation should make both the innodb and frm definitions consistent.