Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '03235ba7b0037907163d5122c0ba17a7e451fd7c6746cbce0cfff811e171d4aa' 
  AND token = 'TW00D27VUvYOW2OyWh0xOevF9EVZmvC33Hqpd3u641k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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