Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '53aff5ea36914898c66dafcfed6b28e2e586b916e7a2e7ee26269317862c60dd' 
  AND token = '9J9zGQz4FeZ8eneUgTpP4zSpDkL91x2Q3C5TrvJTqdk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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