SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '695476737418125e5a892f657ec95532146345119bb2d9879d9968ae7de0e12f' 
  AND token = 'P4y7VVZr6nXZZ7Yg08oeytzEe1YpuazpLzk9p+sekpg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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