Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64ac9fd53d27a57abae0ad11a84da0de709b8fc33318f559f6bf56b5854840e8' 
  AND token = 'RCoFvwVLdaaCtnKk67TzGWjsOf4b0d1F07RiAAqD4Io=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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