Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '46ad44948117f8514c0558c4253d5e41d0ed597de66ce5f84a51625b18e2a684' 
  AND token = 'nUkolDOuFB9VaFYf6X4AeI/ispeOjGA/vypb91Cd3XU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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