SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '22e2a2639402f4c0d5f338d6f119792f64fb60c7e52102a4195fc13d4ea1f631' 
  AND token = 'Qs6YFu2K7suuYJSlTLiYdoX/gBpn3l/GMLdMMksCzHM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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