Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'daaccee4cf363b292e83810feee3548f03f42382dd79f4f53945eba3811194e4' 
  AND token = '4xUmMGtMMHFK5Xb/nbAWVdR6pQHE5gD1P+yFmITXdIk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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