Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '563b42fc9fba3b0309fc9bd357386299b39988419ca8756aec0be803681a777b' 
  AND token = 'YjMHdueZZcgPCjRqOJs6OoFORe9wvG51gF0Mee3xOM4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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