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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f60cf8f11b37745a56297aa41c18259029ae4805828e931809bfcf0d7b6f22be' 
  AND token = 'y/kDiUiy1jqUpArfsDpNYIAucaOb4ZF9GUr73DjJ9W8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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