Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '164901e7ef9658f439cf7c6f25f645d85ff07761b9a0de16e73371f3ab8dd754' 
  AND token = 'HV3cHXgF6B1QcCneKVLdZntuCoXnjWh9yxDAkFcOmAE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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