Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'be5cc5c53461f438b8da08739a41ed21450ca1971365621fabf268ddb1d8c823' 
  AND token = 'Vlkh5SJsCe14PZrNMJeXpSYraZuM4s0gE4Q3ovomtWQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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