Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6cd7dd998204c50a67f57af6b73766b55d510754ef2b6cd61faf5a1233308a00' 
  AND token = 'R/s40WMpWzBNgMtZIMltZQD8MRIVV44tjZfHUwgROUo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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