Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '826f072081c4ac7fd5305dbd6bd4970e68adb3eb872e4b9c4c05a55fe7cd308e' 
  AND token = 'CaUCLD8UNKNXnBh7P64q/FwIChgSd+7/RX37KfvpRrg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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