Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25ad7b1533880e9ae6c949b74240d64d4a0f06694a37365adbb15fd9147329f2' 
  AND token = 'UFyrQ8RrPfI0aciBgf8F6JwbwGn6Brlalx0EO4q4y4s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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