Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a65d8621c35d09660d6b488dce14bbee1551953a234f6ffe4d011a413a8c4786' 
  AND token = 'fkBTytD9cVnpy4eHjwb8vLoxxioAHPfMYBhQ7fAjZbk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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