Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2822ee6175fb8ed9d5e0bc19e86f1693a08450bc9ee7fb6ed2500e3faea87c34' 
  AND token = 'O79uISvniVEdRzzZ5zExMn4BfxM70RV6B7XUH6Z+umI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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