Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fce28977ceee2cbd6d917c2b90ca759fc5cfec388d538e69149db276cfc6f38a' 
  AND token = 'PuyRlIdC4zTyyKmCVH7v1kmvHJS3Z/i/eH0dfOKKFxk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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