Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '415c85aede7dae0bad464af84d5b6e9f7ceb77bcb8d8aabc9beae22696e7d69a' 
  AND token = 'Aqqw+cMQMJSX2BNx3cfmo6drbT3+rpfZGQn/2b2DCxA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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