Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '161dadf2f50675c2682fdfa62b1089334f20e498a0d82caff49c774c32c94f16' 
  AND token = 'vc+FFdKN7ruogCofFD19ppFLcEZu6amEsWL2mWHUmIU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}