Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '86a0798c0cef07157f620ba23f75e152a5158cb43042bb8f14994ef609e76d59' 
  AND token = 'J+MK3MMsGOhNRWRXGF60JNdyDNbzOfM7WcEJ/+0BShU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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