Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd23aab9b0838283f146ea91c414e885b7391a19a12c6d8aeb8e96036855badc6' 
  AND token = 'Pkl/rbJAHx/Mnuzurz20SfypOvWozNRMt1kzD4Dafvo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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