Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '40969a7797ee769a7891dae4463101739bfc5841e23bca0d2c1332aba4e73763' 
  AND token = 'X2vifxA0/oV4DYWGTz08YxKmuY8YStdIOyr6lZOaRDY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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