Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5652a7b16ee2cfef5d191816513cc6c30f07d21a10511b0cfbf61ddb78e9aa74' 
  AND token = 'BW1vLPnZTS0OuN0E13rPjCqmX9JXM3rlr1VInfu/vC0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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