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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '39d4319ac4862d8a59c823b25a0c6faa86dda71787e5ad437ffc99ef5418566e' 
  AND token = 'eeyY8seebTAh5e6TfhQRWVXRI0vzcJHgRAiCM+RSkFk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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