Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd7884b9203e468d8962ca5e5ae24b66a56d433848d9273d9aacd7d2205ad4776' 
  AND token = 'tsSWY5QHBUcqkzeT7CTH5SbDFVty8JXYfZ7DgTdqFOw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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