Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3a4af280af3fd52ad01963614af6762fbacb9b1ed700aebf5d3e81ecabb826e1' 
  AND token = 'MvvIRLS9q7qw4p4egR4EgmwVKlys7clV1/NqvTuZdZ8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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