SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d1687bfaf79069bd607cb580a28b88e02b7c5445df028e6fcff40e3433ebebd' 
  AND token = 'V7YLGtKFhjfuV/KR0USFwCgHWBmSwxxSC9UJ9jvpd5E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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