Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '15999850811165332f7c198fd7b8129c4885e432bbcace38827e04d0c9c091a0' 
  AND token = 'pu3/otJZx1bqnsohcZDU2S1txwKHPAwGE9HamQTQNM0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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