Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6a2e09f20593c25e1c61b107faf5945eb1f3e312732570ac34057add8f8defd3' 
  AND token = '35BYjSlEYQe0uM4qrKg7IpCOP81RNtnWqVpI8cM7hzw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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