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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '16cb88f4b26fd813d6377f219ef0ec812e9fe14d0115f325d7c56afd3bb14370' 
  AND token = 'I2F7mswe90LWTBKBKtQbf9ppj4Yv1iP/4QA938YkinU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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