Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '14fc24a7779c40655a3a6bdc17a90025beea93686fc7735467e974fe0a9547ee' 
  AND token = 'fL3+KVW5+c1Pe1T3eKqUUH0ZIZvCthPnmVvhb3fJt1g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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