Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fc7bb17dee29adf5f95b309cf1f3f2d70ead8ef2103efe6fe674aac58b4ccd05' 
  AND token = 'o27y5RyGrmbElotnQpDZNP1KDEd64WT/xYYhqYWnmg0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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