Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '670f0657a17d3c19a5de49a2b35ebc396d9f8d221e5151076b777c9b30de7150' 
  AND token = 'RaXZP2saW2eMDh/mnpTCSNJW3FqTNytI6HTtFmqU9V4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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