Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7d46f58195e368d74facd8b2058f2dc026f2fbcd74ef167026938e05b67a1f3f' 
  AND token = 'K95/ErGfEngy+qUJbe1cGktnUprtfo7NWRThX6+28Do=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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