Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '535190bdbf397e6a1f4f41e62953f7948c14b4e48526f5f8f432fc2df2cad4ee' 
  AND token = 'bP2O9OcacIikofW6bzbzAt9JA/0FMpHr14spgGI+NP8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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