Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '85ebb89ca99b3180437761414898ebc190e72597870d0259d9a857da8ccf6213' 
  AND token = '+mueGqvtUJ/HSIFlHVSa2wd78NbbgA44yGPCAEbdROc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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