Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '86644a5afc9b6c4e0aed94e4b7e8d6dd61e93da8be9d81715081b92944729010' 
  AND token = 'OoNrNtBq1Ooor2geYh+6qeU/fTmQytdKOW28fM1JmNI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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