Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '58f0b7a705a0565436f8d938f42b60130e237c6b8df0407c72e7dad9068f220a' 
  AND token = 'gS4DOs9I717tSbdT4YCri9G3gqeYL98CbW1eVis+1io=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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