Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c59e5d2742495e3e905cee1a4160ad793d2d99ebdd1f9f5d7225ba62b94dea70' 
  AND token = '8XGT2wdUjZuNUQl//h7oQx/52R7oPofhV0EuDBI8mc4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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