Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0957c94b255f2f0b12e0fedc0b210eb604290fa327d9ee86ae926c7b6577e41c' 
  AND token = '2P6o0DwW/mc8q4yPny2lMvLvw86LNl2VvPUAuYamAcA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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