Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f22fc81077aa93890282db7929d9e627cf1c628ff2915894b1c0128603b8d6df' 
  AND token = 'dUlOuPStLbVsjdJXrPa+3kagQKuB2IA5o+vH4bSLZk8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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