Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '89e78589e0fedfaccbbb9a954b625390c1f54c709e592f5a958ac31ea3180523' 
  AND token = 'SPgE8G0Vq8mEjWrA896VuHCLX3DPZ7S+5iKaaBkNzik=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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