Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '85ef328d61f4c92d9cd624717b6c32b80b84481644e2329f73bf27c910659d1d' 
  AND token = '7TikkdHaKn+5RYGxeoQJl/lTd3CVj2tJg6afy6se/LQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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