Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80f309a0050cad75f5bbcd16e68802791303cbd6448f4879b6ded71c62c50565' 
  AND token = 'SYl4uadoivctewkrAJGxRZHGmcuhGBXPk9tdC0kl1Hc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}