Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5886e3c105d65b9f812ce516f9731d8ba34bcf0590429414d78350fc5229d2cf' 
  AND token = 'Syui534MKEnRc+QTyTH5oCCYQ4srYFvX2l5PZsjzwsE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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