Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '54500744a50412bb2674c8914a3acf94d34fe7bb5a5a02ec9eff86600d9ec760' 
  AND token = 'uv8wPnunBTsit8afwzdqjHr7o0CJ16ws2OZra6Mw8ZI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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