SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c04327f9e67a9282445ab4ae53067f833dde5d86b83b6f434f5feb88f6b1cb17' 
  AND token = 'wa/ff0us+zS51miNHlqAlNJPJx1VTC9F5Nj9qXgypzI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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