Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fd7b16af83a0ef4cb09f7e95a58f2a5b7d4fc70122118700bc1c800c82006150' 
  AND token = '5Ae/FkTVT3li7kqAcsld8YHzWBjlK+o3BaSeX5UWty8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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