Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e0231297de4aa5a6b400284d41a0d032d39d70963407d9de5150ebbc46eef56c' 
  AND token = 'Rpl+7Kzl91jZuDNp0lykrZ1ifofdYqqzbo5csk0Bw2c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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