Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '448ceb143cb2f798d77f40d82997b29577cadddca6fbf65272b55f9d0f4e97e1' 
  AND token = 'dr0oNwvC0UbtBNf8hMU12EhRwQQaq8Nn7Y2tZGG/nYg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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