Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f74212d20da264e79cbb4308111003a3f4db2ddbe8c81200c52fe4b38f257ea4' 
  AND token = 'iZG5hlpgUUMmqqKA8+suhagzKweoRYu88SR33MIPnOM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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