Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e887bf13e52d77eda036da0d8f65d3bbe663549006e77b99676fcb065d98fcfc' 
  AND token = 'WpJrMP0+jelSMrp3syvA18k7NBZ6t0pUu6PYMarmP/Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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