Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63b7af3f72229f43e41610ffd6193825ded76982fc77065c89b52b5471250908' 
  AND token = 'Nenmc68BJqLLstBEudcLgiz9LpG+Ik6oHUtTU+31c7A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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