Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c356f084045ff4c92aa08783f1c5c41b16239ca1a92b61edc380133472df7fbe' 
  AND token = 'vm0ua86zpqcOQRSMLnydmMgNOQO3n05bGfce47vOp5w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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