Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3aee46c38094e8c2fd430ad4209718e09636d78f8c27af9b74826a428244c2e5' 
  AND token = 'SdS0aOVOv72hR8oVnQOZqwe2h23fv/buQa50gHd9K3c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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