Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bbdd1d3eb0a4e8c6656a42fe9b04950ee168e80432fe0475194600e67937e17d' 
  AND token = 'jIvdC7K53t/CNFyykvsuo1zWjsohSy19hnTRoBWulRk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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