Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32e020ca88745bd2a20b864725b709acf874add3596c438be05d24987c03b375' 
  AND token = 'uvBBlBNgPTaTAmZx/5UFmdi/bUfE6MHX0lFTl13Q3YA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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