Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1bcf88787aeea886509e2671e8af8d7eca39e4c72cfe22ed8825f8cf44291f4' 
  AND token = 'fie2S9J1qG3lN5wJooFuyJ0s+gvRuvC/toaR5F9q58A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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