Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '58205737ec1cc0689947a9a920a9bc559c4dff8880aaba0bba5b72b597230927' 
  AND token = '6FydaB2i7Wc2XfsZqQWGeOj1hps+9vfHsp1zDThN1mE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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