Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24ce8d2d062249b7fad42575664dd68df5d87032e4e07838fd8200dcc9dc2525' 
  AND token = 'q3h31KWLWcNi0/OvRh4FHgmOamy/OhPdFP4f/9TO4+k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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