Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2c3986578c41af56d98c495de56665b77754c8f3ff728c31bff42e2361205090' 
  AND token = 'EWQpD2RQRrJb+VuwHWapA+I3T5NTD1373K0v0/iNcCU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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