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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc5d8fbb093c4fa2a5ee9c5d7367ded5236120dd942c7452c94113ed3ed46ec1' 
  AND token = 'KBMBJR76A9dS0TjVSD0oC3g9w1xgxKMNHEaJbb/j0Qk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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