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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '82b8fe88ccdfd3f752d0988139ef71ee58ef30fb8e6595ed3947f8e43298c311' 
  AND token = 'rJ8l/HCu3H/FxuHhoaCTkr9RSwv5/lYzuc1ssp7yI4o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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