Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3409dbbdfd8b131959ec4b1d11bfeb87cd2d639eeeecbc694b7904af72b05887' 
  AND token = 'lwS3KaaV2nk1Prh6J5f/k5wAg/+s05oD2kQBqH8F+EY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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