Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '542170dd3cb363da1aede5ad36fc319965280f0b933f605bc8f6f1758613f8af' 
  AND token = 'zVWXtRN8oMIhFdXGAOO2S6k0sNw95GhJ08Kx6bQtGRw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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