SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c3df9751b9a599e75e227c1653340413f399423266ab3e9f1ae96294a214f88f' 
  AND token = 'VQqKWt0sk0q8h5fCGf02PqsUYHL/Ze/uPoT4JLVj5iw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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