Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0e66d51444d523a17c005c4ea0042fec46e76b2431d962e698b833606003875f' 
  AND token = 'sAINonqWkZPHSXsL9/I4BspxyoUwZLkt3p9kKbIpiGw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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