Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '725624e571df894258a26f9e85ecba882b8fb35f2c3238541b52b7833d901d0d' 
  AND token = '0P07zOHlj6VRX9F4voychcZepDgiwNrdXU/meeYxb7I=' 
  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"
    }
  }
}