Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '24a6c7493629283f1f967abf71f9ec4ebdcc2c60a5565a3eccc3723f4dcbacbc' 
  AND token = 'jnMAMSQuM69cquq6Wsr9n9w7sNbq5JKMqn5OohI2PGM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}