Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '341c5837cd4f715fb3cf5642b5823bc74da8b44d3ea903c07bb2ea5ed58b211f' 
  AND token = 'jzkozunSKGYXGmox8GIrYIzUs1mtYssJGg7mOjT+RFs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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