Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '913eb992fb45863f55483da7e35e6e08d2430c57f24b271f3e24a4ae54d862a8' 
  AND token = 'V1aLU7QhwxEXTHhD1R3nxooWUEJejapbRxXJdbLEpNI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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