Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f0ff5d228339dcdee9d11071ceb9143419afdb9f1628552f9f001599e905088' 
  AND token = 'Nc00+Vo0VhobssdG3fyVs+R57ALDnZLwhcrbvT3Aob4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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