Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd00f88a06424a1042229845f68beda416f5167ac38f1f85a249bb8ffa85fbc40' 
  AND token = 'GDF0XRhOYioc2TzRx5BptD/Q5WbNjyFSVMGJq8LV6Yo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}