Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '583b22ecf3a526799b55b3a2c1d6d5fb063de9aabd41a679fa4e65557b1348c9' 
  AND token = 'GtjvkHUSMLZEEP6C88ZCAxi83dF2+D+5Z36H1KZyZYo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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