Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4161a3bcd866eaa70c678fcf74cee3285cfaf5b4b897a0dace8298b9b799de01' 
  AND token = 'cymK1BkMibyI8oDZruoOHL26K4Cu1TYKk11ICv2eY5Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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