Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9b43bcfb31f609d78336e816df8facbf6c960e062d46ae70e6b3f80afe94b532' 
  AND token = 'mNQJ/fO6wCtei9j5+69fT1e/7yzaYU9M3hXvR3mxp6c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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