Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e4c19e13f1bbcb4cedd205e70d247b2c8505ced16eb5081e9dc07d20d596c2b' 
  AND token = 'yihQFYnivaQGRMMwlBy6p5lib0ql+e1y2q6XmFlEQbM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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