Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb11c83d29f7bf0790606750560cd9fcc50a8ba2f0ec5cd6000be1f5256c5fae' 
  AND token = 'twHWVfDX651d7AHtGc+rm7QkdVta/Z3r7VNG/6gFW8U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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