Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee67dd002f96b6733dd16ca2e66740405173b6c03a7544d777f444ccd416d814' 
  AND token = 'xE/zxelPPX8++kkPsvRLsZyhtY8f7OCTbUMqPte272c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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