Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cca7f9cc96ade9c54f085f5274f6b0f3d241263c326264a310fb03f596ba2f94' 
  AND token = 'uGpC/vue5vLeiB25/R9QopYirYSGbmtlUhjpJuk/CNI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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