Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07a6d1d62cbb030c981d6cce351dbd93254d9ce282c8cf3f517bd814f7029abc' 
  AND token = 'mmqfsxkHov/qrcK35WRUDC5OlN4Ho4Suda05vc6cBG0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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