Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96165b8b6866d80afcc411bbd5939649285ad84fe24e062c412b139a30aae6fb' 
  AND token = 'X45I31cQay+cTX9y4f5yR9uvcKdZ3ysjloEe6mNC1Zo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}