Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3d5c736759d57eea3f7790ee0eb6252de608eff8dd56a1f88b2bc936bb00990e' 
  AND token = 'WNGllloplcdvc5a+XP2tyQ8KAQn6rxePLDs1NyJRnHI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}