Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '479c2b2605b73096f39372b22cc0c98992fabc376586eeabdf7ad54da7d74e8d' 
  AND token = 'kzF4xsKTKEa7TijRCfTcPgeIAuLfqe5OOcvXs5EinoI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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