Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '929fc44cad46a78509fdb97d8c0c6d77d9d0126fd04a6aa8d3dd7de91727d0f3' 
  AND token = 'O3AosqxhsHe1N9wVg610hBG+naqYSmc9OP8nFVO5p+Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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