Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd3dae531ddaacb38ee5c56d53a87c15bbc2e554aeea4b69e9674a4b670f62151' 
  AND token = 'WWDne3AT7b1H6NZUyfJ7S6KGwj5kwjVWCchpzWtfctc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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