Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7b54308e6f43b866621b5a9bf14c60e23bd4f31e6485edbce2a885f4ee8cebfe' 
  AND token = 'Irt8b4YlFekXWfNfV68J/QZqwCEe0u9YpENXuJvMp+M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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