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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bbe25880bc3e1ece467ca41694f02e592718be7f22a41d639b02d517c45c8cc1' 
  AND token = '/0TK5/Jp45EJfbGoH32ALHXiBHrXyWPuqkMI8PiIec4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00077

JSON explain

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