Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'db9532c37883cc26aacceb56ee77081a18da839f20c9f2f7f8b26eba1f366710' 
  AND token = '09FRuiPNquM2R8tR3h4xTezbgDkIgzCMDPsOS2iBApI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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