Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3dc2b841b4d4e541b334cc98fc803ea6d80e90505954e15331988228b0d5fda3' 
  AND token = '8v6/i6LyLNgjMkbJOicc3RnMPI2F6ARIU6ZEOuVbViI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}