Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f1492e492034cafb75f807bd8ef03ced3ec068e820f43777dbda88ea5ddf007' 
  AND token = 'ZnNbDaGOVXhroYwCQyTTFC43MtYU7XDtPhNiqD8b7Ms=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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