Mine

CREATE TABLE mos_core_acl_aro (
       aro_id int(11) NOT NULL auto_increment,
       section_value varchar(240) NOT NULL default '0',
       value varchar(240) NOT NULL default '',
       order_value int(11) NOT NULL default '0',
       name varchar(255) NOT NULL default '',
       hidden int(11) NOT NULL default '0',
       PRIMARY KEY  (aro_id),
       UNIQUE KEY section_value_value_aro (section_value(150),value(150)),
       KEY hidden_aro (hidden)
     ) TYPE=MyISAM;