Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72fb568d4927221e3b9df6b175b53ee66c5ebbc2b58c8ea6a72ea16620baa713' 
  AND token = '+yjddaDjYmC0g2loiE8u69TbK8Gemv2K84AOx6JPy38=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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