Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '35e01ae94e0079fd0d662b6eb3f3626973f8c022e4bfc87df44959b659c53ca5' 
  AND token = 'xRNxU+pcAI6ugL6uVtmkG3tz73AXmHZpAMOygJmEXJ0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}