Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '793b899c45f163c63fd47ceeef06aa182c70c8e4a7f3a09a2f063152add3a617' 
  AND token = 'w7Yzu8eHb0RHTwSRfrmMrSlvQIGE6O6wBd5yOGPkQx4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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