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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95cb40b6e1e6893849ee9e6642c972f4e42665970d24b48b472f5f1f030b0085' 
  AND token = '/M9THlU9K717IlJO1NJ9lY3aEuauJb7ZhP1hRO9AXGY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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