Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '063d200aff076b363c62f46066fc260fc80dbec9e714c29e05136213d4240e22' 
  AND token = 'xJOSyNliFyNcRUdX99fPFPogE2p16fZleJIOCrf4fsk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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