Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24f6557054ebd04f317bb21ec34869d90e5250ea028469ec1c0606ccebe23125' 
  AND token = 'rSbgEJScx/crAeUju+/7Juj/Bpunnsut/NxRXWNYKzM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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