Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c239b05531422a2b76ab6fd978a830d848d55609243f88bc2e959620709ff91a' 
  AND token = 'anbr+ftqXrzX1bhnZnXEB1dCI4jWPILXWi/yBFoZims=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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