Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '84f93aa66efe40f0bf8e7561494ce8fa0b18c3a2f40a45390e8a7a21cfca4731' 
  AND token = '3z7gHxBnlMTM40XzoQ1y2Y5y6PSwL0oWrA18RjI47pY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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