Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2c3bd9938f42ca24e5f1d58452f4d1a7b1c6922d98009728c609069c8e9118dd' 
  AND token = 'qdbJtIP1HhocWe+597uOs/Accw0cvDruQPDOVTakn54=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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