Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32feaa96f843d2dcab2977014c425599fa912d75208c161197aa0cc1329a660a' 
  AND token = 'RtM1if4IHxirDsQZ27L/7tzt0pvoOROT7YHB+f62mQg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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