Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bbf270175d40f0fb9b523f5260ac669348a89db4d26ec1ca382773494f26e96c' 
  AND token = 'JIQIJa506dHB6D6P0Fn+rJBImhVNiauFOTMMf5SeveI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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