Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2b39be1d655ae19a283ceefb33182eb242b4175039931d12a6654d9e3d778e64' 
  AND token = 'JVw1R4XQ8v5i1lTzja5JDxgva0xZyBHjmwRD1MMVv3c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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