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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '54320b057bf4bcc44526c87a7e4a6cc5ed1f7a80a8ef0dc909590b3880a959dc' 
  AND token = 'aJH3IxWxG8S1aFA/85J/EQbMnDl5KMtZfvS5riqwTFI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}