Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c66181d7a5ec652c3ec2a8f656d2c0d87a78415f41a213c04d3f8a443eb35914' 
  AND token = 'z9nWOY0zJNfvbht8pT+PQnr7uQf+cHMkT+ser+9+a9Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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