Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9e9bb6eb313ad8c8124d297fc15060873f29a8198b8947c6a0c54bf78ef36f00' 
  AND token = 'GC2MZ26vgfnOLi2C58UvJb+p+QpbHuuXo/PLswaaOo0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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