Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1130f913f91039698a3ba1ef42847a7072341b485fd61c4a07cefc96b3d74b84' 
  AND token = 'KRwPoyDt+um4b9ATl2dJ0oyUgbyiBLO/4q1k2nC4C5M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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