Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72c63234c39d4e239d2c8ee2200368a15e10b955c2737b5b5c2ffefbb1d273af' 
  AND token = 'y65XH0z04b6se9TOWajDIGECbj2KG40mBQcmQG2F9ls=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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