Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '884a8b60421e6dae710a8e5407dbc3c0317c2601e9119f86fea9686fdca350f2' 
  AND token = 'wUPERD5BcC+s5S4Ter59iMqnHnML6E2uhA7ejZKbap8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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