Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7076b3bc4a653ffb70b04df866abf521174a2ab0bf5f54b4f7f897478257d129' 
  AND token = 'tbV3EXgz55x9XbjbgHRiJl9fAtSV3THRXv/JMfwCJbo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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