Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8f64020a623adc4faca33aaf0383da23bc56184f935e6d1fb9da4dd9a23b806e' 
  AND token = 'oOfukWdroT0ubsLFFW/Ammb7RXIoRTYPmaIgKSV5ZZI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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