Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c01882ba498eb0207d5f02b5aea0448d267182dbed906dea07ff999c0f9f68ab' 
  AND token = 'yQWDh1VwznRI81FYsauNPIR1WG1xGeALTWBm9tNL52A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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