Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e379d85ed6a96f41c85f67707bdf7bec9126935ce25bb7719aa6343d8db7c9aa' 
  AND token = 'dQl7CBVHEr0yA5Ud08rueTWX4nPvIsQoLF7IaVRwZfU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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