Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7b26abd33ec2d606b6d1f1d97ed02e09c1ee0e05a59055ca36d5f8a913bf8926' 
  AND token = '4tcq8pzQKctEuw1M/jdWjAYFZuoIafw5nswk6o+LoVE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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