Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '83b344c42a4e8afed36b740b83d4b9cb4bfb119511cae41b9b8f8b621233d6f2' 
  AND token = 'EZQydu8b6CEYh8wQkgmi82BXnPODg6Pkp3dNHnUz6pY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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