Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7339b7ab35aca3ea1184a9cd6e5e0b2bfa150c76979e9905aefc74132a6055e4' 
  AND token = 'kF7gMJNFhAGMgIC/KEPHUpymv/6OGdyFnaN7wvUBYNo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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