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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '907aef2b506a5f62c8753eeae40556aad6faf579d01cf787fb2e0096c7f6a6ff' 
  AND token = 'UVAqFGi8pQi9u163LK1ywkkhqpYeqFf2FML7jKt4UP8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00060

JSON explain

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