Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'abae32325bea1f516d29d9322673b27da341fcfd888b32cc7399d2fca2105b8c' 
  AND token = 'PQxj2bkj0LMlAtqyMf+7CEz7GYLbYDlbfsdC2/rgOeY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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