Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'be8dbe373e8cc6ef21ae96873d98a6ea5750bc1610640285f207e8ddc656495b' 
  AND token = 'rurdF3wHEpdaJhej1WRhCbob+CQu8Xsww1Ua3EuNXB8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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