Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '92abd7da71dabe58e99a24b7f79204a2ed3a81903006e97157d0185677155eda' 
  AND token = 'NcyXdOpml+meKK+Wk9yqkNqQSDFI6U+4cmGmdJ0JYqg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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