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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9d4bb25b9f826070bff0c701d8e179ede43e82c1c3ddeca01c7d30e5cd6ad74e' 
  AND token = '2eoNl8Ooq/YMuVX30bMEim1yKu6RUr7XaPJuk2M8Vuo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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