Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd97ede668580e2bcbadde5739546276854f01a43780abed11baaeb7d8d5bbfa4' 
  AND token = 'TUEy2pYrNa4XTP/rRjORHEfuv3XSqJgYRHhRd/ndqLw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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