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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41ab2c9d74006bec4c0c52289ef5e618f74ff9c1c4e113a1ef38994542500141' 
  AND token = 'NibvqyX5mxhgtmDB+/e0fWdG3+zZbCFNVAQr6raID8Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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