Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ebcf56707649513a4c9c025e52fdef00df0fcc533d7488d919ccbc687ce9ac3c' 
  AND token = '1hHTsJ8Dgr+auJKoPnIubC8aOxCiQNlwDM0+3/UJ1Vk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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