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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7429f692a50f4c87f9047b4327c0bf23a76c588bf389566b696b42390272e8ff' 
  AND token = 'lgMVc6I5r5qYZs5rVbZy7oGarGC9Hc3onCUqwU3igxk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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