Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b56e092db7900c0667babebdfddfe69353a0ab5c71151ddee578757a5d49808b' 
  AND token = 'qdmkIsJkpsHFAF/c7v06XWEw5+/l7xFb/Z8G+7BtEC0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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