Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2a224fc334190224e2abb4429f71c32114e1d631e281c7435d642045c6b55ba5' 
  AND token = 'i7d/yijHq/p48+ELmzcartaGC/L9F4hKy8sPftyWhAg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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