Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a26c499478c8385ad2c881fdbc944305e49425dd48b128a527e0dde7c3abb3c5' 
  AND token = 'ysoGennalth9bdWb4jwxjIVO7dbrq7KkxpWiAFN/hGQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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