Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '79f4057713fafba57dcefceb46ff77cb344f9d4e48451c818e83f51c1e7f6ada' 
  AND token = '66z+DvXpGzIdjx0iGcRKsd5xFpcgeEWbHH/lssOxrxE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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