Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ef90d6fd53765d35b3c390e2d59d7d27d88504981ae828427f5c2a7d910706cb' 
  AND token = 'rJppP1gD/W93whzBpusPTa3yVk+ydF8RT7Ti+A0biwQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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