Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0fdd26056b097fcdbd144cf5dc84b3e7af08824e262e3d259c6642e135c052b7' 
  AND token = 'swF0ZXycvC3v9CDOuirnZ5vJEEdn0XWd2ID59V2Cojk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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