Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6661afb93c6202c7b5e479166f4b626b55eda8abcd640cd8a88fde41790bbf8e' 
  AND token = 'cpr9+zRgatazXnE5I5iwo/n60befhq58ND0ZwyFZFN0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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