Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_53 ( attempts INTEGER, net_yards VARCHAR, touchdowns VARCHAR )

### Question ###
What are the highest attempts that have net yards less than 631, and 2 for the touchdowns?

### Accurate SQL ###

SELECT MAX(attempts) FROM table_name_53 WHERE net_yards < 631 AND touchdowns = 2