Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '46c9f43d97aa24934f08de01200c7ddd7706dbdb290899bb3ae041fd054e9548' 
  AND token = 'v0ykIPK5CrkM0pZ2WBOlrea4ZgICL/P5T8MnVsBI+tA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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