Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '10cfa547b2e0f60fcef2309524b3f7a9d4ba23cef5d03b164edf1304ff8866af' 
  AND token = 'yrNRSrhIGBElTY1JxqwxWcDY2OCo1Rl8luM/D8zXDbU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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