Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a5fe13e4177ed1838164655d53e2267c86f0880f3b0ca5ba4424e32f7e317df3' 
  AND token = '2XAb6bfB8H5zDONFc/HGYBeNV+JihaA4us53X9tDmq0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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