Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd02356c4ef785f6f95bbef21e2e59ebd65ba0d70f37c447f192c5c45e5343d63' 
  AND token = 'LCc9xQsKwB2CvGGMiQzSmpozmx49Xpt8n+hPtxL33H4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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