Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5040decf11b8d8e983e2f42e307b12832681a3f7629870fa666073baadead7fe' 
  AND token = 'Ax7kzy28xv+Po7COHL0Q8ln6AA1q2HbTBbJBvp7ebFY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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