Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '99a2b17ca2945aa0fe5cec156fbf3cf96b2a7c6e332c40496e9a1b914151f2af' 
  AND token = 'XUTfZZel+V8xmnI/WnhMCFkoIlTnJ603jyY40oqhJac=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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