SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'cd97a6ba80594d5637e84f9c996b907c2637e8f79a3b765a612b5a9117f54b18' 
  AND token = 'YDTu8UhLz9pqzuTqXqwmrWHF3xqzA5m+PwpsVaPFlV4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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