Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c6e7e7c85415874221fde811a667ec221fa55d350cd1cf8ccb944c52695f700' 
  AND token = 'i3Yioi1ngbVv++do3CEyu8f3EUInLXT+g3jiMWtkUvk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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