Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f1a7bcf9faf08a9914ad7b906e35ebfc47c17862647bf21bbf54baffdb15a232' 
  AND token = 'jV8/osivCiWgWK0qrd8gCyy+GC2fKpI4FYkS5N+bsY8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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