Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '765697d53a165ebfb3485570c3ac5240018093f28142b76f3cc18a534b713dc0' 
  AND token = 'Xm8lWU2SkJ0qnkG9o3oIgD9b/WIbsbUPUxcSZA7LpIk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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