Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9198951b96b1a25ced70bcc472120af23a2854e5c43f3af0f99983eb810dcb29' 
  AND token = 'h05rBeR36uFTO+IG9hyKZGrYilRxyKuK7xxD3yXJ1vA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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