INSERT INTO cscart_lock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '15976b35338740023e6c75ca069fe09016f56995c828debce2d303d026676b0c', 
    'u57brmvEcAk7h0fNQlwzagToGE9gZ4Lu0zlTfcdNLJ4=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00025

Result

int(1)