Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fa7b2969580f68944d1451cb3e75ff2c82e9b007ef0bc46c9b1d42b8447aa48b' 
  AND token = 'SsVbsqE+VU7I89jrCN8GddRrxxd1W9m/D13gkG39nZs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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