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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'dbfef31139225932df0a1f370f3ea34a7a09e0f631a8eb13b5e26fca87e963a7' 
  AND token = 'GoGtkHDrSM+9yLkOCckaZGRPiG2bczhTQXKcuntg69w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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