Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5fc604428fc585fb010d80be72330fc9491b95901af12c34bb501af1ac865c37' 
  AND token = 'M8qMAZKBGziZAQG9Seat2icryw+xktXn/swS7Ke3Z5E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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