Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eda6f8e30d3d932e62a5d67ab72260cfeae9c9e924451dc1e125460e0a78f9df' 
  AND token = 'O8sbC4xLb4wUE0PozRRqBGstxqDjyHgXt8Jte4avNeE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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