Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93b5981ed24d7a042fcb2c6876979c2fa8bba9155493cf924c972807fe62e26b' 
  AND token = 'pMO0QxZCFRGSTM5GH1E8tjpmr+2HZ27xWuriSmpkoHI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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