Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '17f24200c626e79d6e3ffdfa2cb7f5edceb40a5de1ffa58db893794cf73026ca' 
  AND token = 'oUePsv3A0Ddj6G9y8DppGyiR0O4cSpg/0M7NAKWIirY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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