Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd2fccde295c2ba5f51403badfa02a95861efc49d54e28afe17af7833d56cbcdd' 
  AND token = 'WoH/u24u0N++dHCXgTWk4G8vRHTnNUIJetW2M9PdQF8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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