Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00a5419f4dbbaab741a4371c95a2ea4e1db2cf8f71ff12a727d492c1fbe85e82' 
  AND token = 'miyOSjK+vhYRzQvnAhqG6DaXNm7hYRukuq0Apot9ajo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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