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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2b60ce48586dcfb923fe7883db9ee9f1733cf38a556c925123f371d3648cfc25' 
  AND token = 'VPeZAC91H5OGyvZsMlC338XVwEnotYwkLrXzhp4cci0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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