Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93fd56c92cca35d546938e38815b7ff14a130674a206028e0b6003c141237a8b' 
  AND token = '01qNaZhH0txox11RFZWd7TZybM6amvpcvMe+9IJyV2U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00082

JSON explain

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