Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'de76080d89f17682e77cbd4ebe76193abb8a9e17c7617d07c45b8a7bc5fdefa7' 
  AND token = 'AoVvs40lgwlJmYzdmc04PuyEezGZffR8okDUpfG89Sg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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