Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e2d951707ca925aa37a2c5aaeeb38c7eb3e85d7214f83faf9c737766367dd27' 
  AND token = 'syNBh8GtF0N09SR+HWpyeB8pr64FHjvNOwrLE/kgKa4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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