Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '71faa7c44663d455dae831b13dda521c5f8c6c325607c156a9d939980df0f4ae' 
  AND token = 'B2HUUAI94tQX3L0tF1HGEIDLyPcjsV1WUhDGfPP49ic=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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