Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4b27784bd1417ba0fbbca4b3e537c9a983865fd961c27bf0f29967225354c1fe' 
  AND token = 'AnQEDOwCDF1CS3ZfWcOThBen9zz/dqtVaoUWal/WXNw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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