Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '705a70ca856e622966bf4ae0ac5ac3fdab84c0f04eee864282e3ea4762061911' 
  AND token = 'hY7yJFye4v785VpuYDQVRIVCcNCBPi9nix1HFQt98bw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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