Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'babcbb5ecc2e0a408cd00cb7694aca60122e5f28306916d57c4cb7e2ca33d465' 
  AND token = 'wByI6rsAyVlir6rVuoB4MwN7AHN1Ei07m+swVvfVZvk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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