Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cff4f96a96dc9cbe948e42a224d3559f0d9093a607545d6f87370352f6ccf767' 
  AND token = 'p8fapzGCJlP4T3eq00yobZ0Vn+YDY47PnAl1HJyxlWY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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