Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '134d63b3362b57a7fa7efbb6d82eaa367b51d7c2055a13d72772b83df2831d62' 
  AND token = 'U6Bd5PRQcTrA/GvCi/r8bjMT96zhUacGieRqPDNr3YM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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