Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3931ef4494eb9ecda7f8b96ec77bced5052a095a6da23647d5ce99d5faede03d' 
  AND token = 'It65qXLPEh6smejQGgwMt4fvYdXADq3frBELSkdFfCQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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