Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b9f43d9929863d1c24a530e128276595b174c69a9c02631391d434f813c7c150' 
  AND token = '7uoZWQBLHEgXvTsdoyS9uCLPl71ZSNgKztXKhLOt5XI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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