INSERT INTO cscart_lock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '521eedbe6e284d885fc6c16415f66f282d8665257d655d7d8af717f8a259bbec', 
    '9dWJ1LCQnptvZLnY0cKqPnGqKKb+tcnRJN/9Z0L0xHk=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00029

Result

int(1)