Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '033e93a109dcb59e888e64c5777033df1a880c1fed3fcd8e4459302b888de352' 
  AND token = 'IC80cUn7hYAigXmTQuP1bbvvQCgpmQGncd2zDfJGHcE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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