Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cd7fc03df7b4886684aa0e6916909e7133478c06a45a901207cd48990aadd7d1' 
  AND token = 'SDQ61vaW/Lvdlqify0yAau/yWAdNizNFQULMlq8ISwY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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