optimize schema sync query

[shantanuo]

I tried to optimize the queries using the following parameters. But it does not seem to help.

tmp_table_size=200M
max_heap_table_size=200M

How do I make the schema sync query faster?
It typically looks something like this in the processlist:

SELECT K.CONSTRAINT_NAME, K.TABLE_SCHEMA, K.TABLE_NAME, K.COLUMN_NAME,
K.REFERENCED_TABLE_SCHEMA, K.REFERENCED_TABLE_NAME, K.REFERENCED_COLUMN_NAME,
K.POSITION_IN_UNIQUE_CONSTRAINT
FROM information_schema.KEY_COLUMN_USAGE K, information_schema.TABLE_CONSTRAINTS T
WHERE K.CONSTRAINT_NAME = T.CONSTRAINT_NAME
AND T.CONSTRAINT_TYPE = 'FOREIGN KEY'
AND K.CONSTRAINT_SCHEMA='murti'
AND K.TABLE_NAME='response_pages'