Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5aef204cb05f9753499446455fc4977bed118a2755d5a9e3c4c3a040ef27f762' 
  AND token = 'CHAvv0G7RBesDFLUMPSZ0xu6ne3KY6AKchXUZWs416s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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