Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'adfc415b1c7004b80da58c8653260c44c6859f1848f8f93471d465f8ef875404' 
  AND token = 'bXz31S4EY+JkXNIoSiv66hzPCz33MS+SXuOIDqlATqk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00085

JSON explain

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