INSERT INTO cscart_lock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '52ad21e834a7bd88f045963b56a19f5f25f7e87013f01b017f164783551d4c8b', 
    '6hED+S4krNnkOjIjww3KemcAEOmufCg4vy0VVzZs5dI=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00034

Result

int(1)