Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0a0c40fe84aba1a8be72c96c54d30f62ac372a9ad77c708af49ca95c0403600e' 
  AND token = '+jCQTBWyP30YqmZYp6gGQ7KskAibZEemYogKX9qUY7Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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