INSERT INTO cscart_lock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '921b16fa6fad372eee0670b884d685bdf952e2f0210289887a3824891d828314', 
    'PUDLdHvbljjSVWmIVy21vKiIgvxVcCbCU6nR5sX8SuY=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00021

Result

int(1)