INSERT INTO cscart_lock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '51a557251040701e6ab421b75ec2601d424884222b1d36bf3e52ba2db3a5513f', 
    'BrsYvzEMKRs1MiWEXan0GLho7euBs5ypOtzJz8mAbho=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00034

Result

int(1)