Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a081a75137d04ff934893e5165ed6f1991a9c6fc8becd2a0d5457f82b3945172' 
  AND token = '3L43bPzaHxTvWXv1vdfT9nADk3HHIK5P6+Aa4HNMLIg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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