Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ab20e11edd94382e3f6dee698207425c10bdbe3c74b57a279b83048df5dbcaa0' 
  AND token = '8yKIu5OgwEol8Mszog0pfzgCyiSnq26LTweFrP6epsE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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