Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e771375330e7cbcece373cfa25be56b5b7a8ab2b5e2e0439c765c5cb71d9ae28' 
  AND token = 'g1cwOpn5ca8qovCDSKK3lcmLuyf6oD8WUkySRxTW4ao=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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