Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8658634c6ff276639aaaa92668eae7d181d79a53d7e64163cbbb92be04da60c9' 
  AND token = '7KxbkJjMf03yHEZvFxghJ1CfSAja7Q4e3hqw2J21TH8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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