Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1bd2a814141dd973c3b5b7cc1224e9150aa409d7a423deada55bae7d5453c579' 
  AND token = 'vIE+IcBNpqjqfX1wApAhfv6hxTMyjIsk/sINioUDQnU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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