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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd7a6d0a0b31548590c1b7316dfd79fb72e665aff2eef9579c86ea5f143f3972e' 
  AND token = '8J0/7oM5rz0o/LsI7JmWwj2VI0VXj0lZCCX9Plwa1Ts=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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